The Japan Racing Association said Thursday it will extend course closures through May 31 due to the ongoing coronavirus pandemic, meaning the Japanese Derby and a number of other high-profile races will be run behind closed doors.The period during which horse races are to be held without spectators will be extended for all events in Tokyo, Kyoto, Fukushima and Niigata.Races in other parts of the country have been called off indefinitely.The Grade 1 Japanese Derby, also known as the Tokyo Yushun, is the second leg of the prestigious Japanese Triple Crown and is staged at the Tokyo Racecourse…READ FULL ARTICLE